Indeed, it was bad news, and not just one piece.
The battle report had been confirmed, or to put it accurately, a reliable battle report had been received.
Because they were worried about revealing their location, they couldn't take risks; therefore, unless attacked by the enemy, the fleets operating in the Flame Sea had to maintain radio silence.
The battle report came from the consulate in Nanzhu Country.
According to the plan, after the battle ended, Takano would arrange for a staff officer, carrying a detailed battle report, to board a seaplane to Marra City in Nanzhu Country and then use the consulate's radio to send the report. Since Nanzhu Country is an overseas territory of the Newland Federation and the Newland Federation had not yet entered the war, the process of transmitting the battle report was somewhat troublesome and took some time. However, this had already been considered in the planning stage.
As for the specific content, there is no need to elaborate.